Process for making casein from buttermilk.



' i'oNrrED STATES PATENT onnron.

RICHARD EILERSEN, OF COPENHAGEN, IDENMARK No Drawing.

PROCESS FOR MAKING CASEIN FROM BUTTERMILK.

' To all whom it may concern:

Be it? known that I, RICHARD EILERSEN,

merchant a citizen of the Kingdom of Denmark, resident al; No.24Kronprinsessegade, Copenhagen; Denmark, have invented certain new anduseful Improvements in'Processes for Making @asein from Buttermilk, andof which the following is a specification. Hitherto all casein has beenmade from skimmed milk only, and it has up to now been consideredimpracticable to make casein from buttermilk. Now, however, it has beensuccessfully done to make casein from buttermilk by the followingprocess: The but termilk is heated to 40-65 0., and is left a few hoursuntil the curd has separated from the Whey; then the Whey is drawn ofland the curd is washed with cold water, and cold water is added (Whilesfirring) to such an extent, that the origina quantity is againobtained. To this liquid is-added enough bicarbonate of soda to dissolvethe casein,

and this solution is now run through a separator; thus the liquid isdivided into three parts; the butterfat of the buttermilk is' simplyskimmed off through the cream pipe of the separator; the dissolvedcasein flows out through the'other pipe of the separator and the albumenis thrown against the sides of the separator and clings there, and istaken out in thick cakes or layers. The

dissolved casein is then precipitated by mu- Spec ification of LettersPatent.

riatic acid and Washed with cold water; then it is pressed and dried.

I claim as my invention: 3 '1. The process of producing casein frogn ybuttermilk consisting in separating the wh and' curd by the applicationof heat,' Wash-- ing the curd with cold water, adding suficient coldwater to replace the separated whey, dissolving the,casein by an alkalibicarbonate, separating the casein solution,

precipitating the casein by a mineral acid,

and washing the precipitate with cold Water.

2. The process of making casein from buttermilk consisting in heatingthebuttermilk to 4.065 (1., separating thereby the Whey from the curd,drawing off the whey, washing the curd with cold water, adding. a

quantity of cold water equivalent-to the RICHARD EILERSEI I.\vitnes'sesz 'MAncos MofiLLER, VRYGO O. EBERTT.

Patented-Jan. 265, 19th. Application marina-rah 19, 1914. Serial No.825,832.

